How to select different intercompany for different transactions

I am currently testing Intercompany process and would like to generated different intercompany accounts e.g. Lets say i have two scenarios

1. Bank transfer process using cash Management  - Between different ledgers.  - For this i need to generate IC receivable and Payable account 

2. Intercompany invoices agis process - For this i need to generate Treasury account instead of IC receivable or payable. 

How do i set up in such a way that the system picks up different intercompany accounts (Set up at Inter company page in Ledger definition) rather than one default account

Regards,

Suresh.PR